# Relationship history for MSHA mine 3601086

Current hierarchy: **Steve  Havrilesko → Creighton Hills Coal Company → Carol Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Kutsch Coal Company → Carol Mine; 1950-01-01 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Kutsch Richard → Carol Mine; 1950-01-01 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Kutsch Richard → Kutsch Coal Company; 1950-01-01 to 1978-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Havrilesko → Carol Mine; 1976-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Meredith Mining Inc → Carol Mine; 1979-01-01 to 1980-11-11; source msha-controller-operator-history
- **controller_controls_mine:** Meredith Dale P → Carol Mine; 1979-01-01 to 1980-11-11; source msha-controller-operator-history
- **controller_controls_operator:** Meredith Dale P → Meredith Mining Inc; 1979-01-01 to 1980-11-11; source msha-controller-operator-history
- **operator_operates_mine:** Creighton Hills Coal Company → Carol Mine; 1980-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Havrilesko → Creighton Hills Coal Company; 1980-11-12 to current/open; source msha-controller-operator-history